45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* Set floating-point environment exception handling.
|
|
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <fenv.h>
|
|
#include <math.h>
|
|
|
|
int
|
|
fesetexceptflag (const fexcept_t *flagp, int excepts)
|
|
{
|
|
fenv_t fpsr;
|
|
|
|
/* Get the current exception state. */
|
|
__asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
|
|
|
|
/* Get the reverse bits so we can enable the exceptions flagged
|
|
rather than disable them. */
|
|
excepts ^= FE_ALL_EXCEPT;
|
|
|
|
/* Set all the bits that were called for. */
|
|
fpsr = (fpsr & ~FE_ALL_EXCEPT) | (*flagp & excepts & FE_ALL_EXCEPT);
|
|
|
|
/* And store it back. */
|
|
__asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr) : "memory");
|
|
|
|
/* Success. */
|
|
return 0;
|
|
}
|